Garden Blog - Top Tropicals

Date: 22 Oct 2025

Which dry fertilizer to use - slow release or controlled release?

dry top dress fertilizer

dry top dress fertilizer

controlled release fertilizer Green Magic

controlled release fertilizer Green Magic

🌳 Which dry fertilizer to use - slow release or controlled release?



Q: You offer two kinds of dry fertilizers - Slow Release Trop Dress and Controlled Release Green Magic. What is the difference, and which one should I use? I used your water-diluted Sunshine Boosters with every watering, but now that I’ll be away for a few months, I just want to give my garden a long-lasting fertilizer.
  • ✔️ A: Top Dress Slow Release Fertilizer is used for quick greening-up. Although it’s called “slow release,” the nutrients become available fairly fast. It contains soluble nitrogen (N), phosphorus (P), and potassium (K) that dissolve with rain or irrigation, acting within a week or a few weeks depending on temperature and rainfall. It’s great for giving your plants a quick boost of “fast food.”
  • We use Top Dress mainly for in-ground plants. It can be used in pots only during warm weather and active growth, but not in cooler months, as it may burn roots. Since we introduced Green Magic, we mostly use Top Dress only for garden beds and landscapes.
  • ✔️ Green Magic Controlled Release Fertilizer is a true long-term, controlled-release fertilizer. Thanks to its PolyOn Technology coating, it provides steady, consistent feeding for 5-6 months. Unlike regular dry fertilizers that dump all nutrients at once, Green Magic releases them gradually - no burn, no guesswork, just steady nutrition.
Green Magic ideal for potted fruit trees, ornamentals, and houseplants. One handful keeps your plants fed for half a year. We use it for all container plants when potting up or refreshing soil every six months. It can also be used for in-ground plants if you want the best, most consistent results. Green Magic: try it out! (Sample here)

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Date: 24 Jun 2018

Cold hardy tropical fruit trees for Luisiana

Q: I've just moved to Louisiana and have been wondering whether it would make sense to plant some tropical fruit trees in our garden. Average lows in New Orleans are 41 deg F in January and February, although we did hit 25 once with the Arctic vortex. I'm interested in litchi, longan, rambutans, and persimmons. Do you have varieties that can tolerate Louisiana's temperature range? I'd love mangosteen but I don't suppose they will survive. Do you have any suggestions on tropical fruit trees that I could try?

A: Average temperatures are for statistics only; it is actual temperatures that may hurt your cold sensitive plant. This is what you should keep in mind when starting your tropical fruit collection:
1) Ultra-tropical plants like Rambutan can not survive winters below 45-50F. However, they can be successfully grown in containers in a greenhouse or moved indoors into a sun room during cold periods.
2) Tropical plants like Litchi and Longan may take some light frost once established. Still, for areas with freeze our advice is - keep them in pots and move inside in case of cold.
3) There is a number of subtropical fruit trees that are hardy enough to take some freeze. Persimmon, Feijoa, Fig, Cattley Guava, Jujube, Kiwi, some Eugenias and others. Please refer to our Tropical Fruit Sensitivity Chart.
4) Remember that plant's ability to survive winter depends on several factors, not only temperature itself. Important factors are: wind protection (chill wind kills rather than low temperature itself), exposure, how close the tree is planted to the house, plant maturity and its overall strength and health. If a plant had received good nutrients during summer, has well established root system, planted in enclosed area protected from winds and has plenty of bright sunlight - it has better chances to survive than a weak plant in warmer conditions.
5) Use SUNSHINE plant boosters for improving cold tolerance of your tropical plant. It only takes a few drops, and only costs $5!

Date: 18 Jan 2017

10 plants that can make you happy.
3D garden ideas.

3D garden ideas.
Q:
Can you make my yard bigger and prevent it from freezing?

A: Yes, we can make your backyard bigger by adding a 3rd dimension - trees as a upper level, shrubs as a second level, vines in between, low growing perennials below them. Add ground covers and potted plants as separate specimens in between in-ground planted trees and shrubs. One more separate dimension is orchids and other epiphytes that happily grow on the trees. This multi-level structure will allow you not only collect so many plants, but also maintain them in a natural environment, similar to how they grow in a wild.

As far as preventing from freezing - it depends. You can use greenhouse, cover plants, create microclimate under large canopies, etc. Some tropical plants are tolerant to light frost, once established. If it gets below freezing in your area for more than a few hours, and especially if you have numerous nights with frost throughout winter, we recommend to keep plants in pots (BTW, this way you save space and can collect even more!). Pots can be moved to protected area during cold nights. The more established the tree, the more chances to survive colder temperatures. You may also use propane heaters during cold nights.
We also use plant booster SUNSHINE boosters to increase plants cold tolerance.
Cold protection is a lengthy subject. Here is some more information on cold protection. Also, we recommend to check out our magazine Tropical Treasures (about pushing the limits of tropical gardening) for a detailed article on cold protection.
These are specific articles on Zone-Pushing in different issue #s regarding dealing with cold. See downloadable issues:
(#1) Growing Tropicals in Nontropical Climate, Three Freezing Nights in Southwest Florida
(#2) Temperature drops - an alert or a rehearsal?
(#5) Dealing with cold snaps, Cold hardy beauties
(#7) When winter is around the corner, Growing exotic Cordyline in colder climate
(#8) When the weather outside is frightful
(#9) Winter champions
(#11) Ready-for-winter checklist for in-ground plants
(#13) Winter checklist
(#18) Dealing with cold damaged plants
You may also order hard copies.
If temperatures drop below freezing in your area, remember to add Heat Pack to your order!

 

10 plants that will make you happy.

Everyone wants to be happy. Did you know that growing plants is not only fun but can also make you happy? In our new series we will introduce to you 10 plants for your tropical collection that will make you happy.
Visit our Facebook, YouTube Channel and stay happy!

Check out this video: 10 plants that will make you happy. Plant # 1 - Rose Apple.

Stay updated with TopTropicals Videos by subscribing to our channel at YouTube.com/TopTropicals and get our latest video news of what's fruiting and blooming!

Date: 6 Jan 2017

6 easiest fruit trees and 5 spices to grow in containers indoors

Q: This is why I want to move so that I can grow absolutely anything I want from your catalogue. Prefered Puerto Rico. Right now I live in New York and there is absolutely nothing I can grow there.

A: Of course living in Puerto Rico brings more opportunities to grow tropical species. However, you can create your unique tropical paradise even living in New York. We have many customers from up North who successfully grow tropical species (and get them to flower and fruit) in greenhouses, and even indoors.
Here are a few suggestions of tropical fruit trees that adapt well for container/indoor culture - for both beginners and advanced gardeners.

Top 6 fruit trees great for indoors / container culture / beginners
1. Mango (Mangifera indica). Select from one of smaller mango varieties
2. Sugar Apple (Annona squamosa)
3. Guanabana, Soursop (Annona muricata)
4. Miracle Fruit (Synsepalum dulcificum)
5. June Plum (Spondias cytherea)
6. Guava (Psidium guajava)

5 top spice plants (the spice will be with you right away, you don't have to wait for it to grow)
1. Allspice (Pimenta dioica)
2. Cinnamomon or Campor tree
3. Bay Leaf (Laurus nobilis)
4. Mint Tree (Satureja vimenea)
5. Vanilla orchid (Vanilla planifolia)

See a brief article of growing tropicals outside of tropics.

Don't forget to get some SUNSHINE boosters for your plant collection - for both successful indoor culture and cold protection!

See also our magazine Tropical Treasures) - Pushing the Limits of Tropical Gardening, with list of issues.

Date: 23 Nov 2016

Growing tropical fruit trees in containers in winter

Q: Please give me your advice. The winter is here. I bought mango tree, jackfruit tree, sugar apple tree and planned them for spring. What can I do to keep them no frost bite? My home in Bonifay FL.

A: In subtropical areas with occasional hard freeze in winter, we recommend you to keep tropical plants in pots. The plants you purchase are tender to frost. For cold protection, container growing has several advantages:
1) easy to move into wind-protected and sun-exposed locations as needed: for example, on a different side of the house. In many areas, seasonal prevailing winds have opposite directions in Summer and Winter.
2) easy to cover with frost cloth, sheets, or blankets in case of immediate cold spells. Container plants' growth is easier to control and trim, and those plants naturally stay more compact.
3) easy to move indoors, inside garage, or in covered lanai/patio.
We also recommend to keep these trees in their original pots until Spring, in containers size of the rootball. Step them up in Spring, when plants start active growth of root system. This will help you to avoid root rot due to possible overwatering in Winter. Reduce watering in any case, and keep your plants in bright, wind-protected spot. Do not fertilize until Spring. Protect from cold when night temperature drops below 35-40F.

Use SUNSHINE plant boosters to provide additional cold tolerance.

Cold protection is a lengthy subject. You may also use propane heaters during cold nights. Here is some more information on cold protection.

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